1. Department of Pathology, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, China
2. Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University) and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
3. Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu 610000, China
4. Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China